LitCharts assigns a color and icon to each theme in The Sun is Also a Star, which you can use to track the themes throughout the work.
Immigration and the American Dream
Passion vs. Reason
Interconnectedness and Destiny
Isolation vs. Connection
Summary
Analysis
Natasha thinks she doesn't want to be having this moment with Daniel. She believes the "poetic heart" isn't trustworthy, as it says that all a person needs are love and dreams and totally neglects the fact that people need food and shelter. Regardless, Natasha feels like her heart wants Daniel, no matter how stupid he's being. She wonders if there is such a thing as destiny, but walks away without taking his hand.
Natasha's reasoning provides more evidence for the assertion that she leans on reason because she wholly understands—and has experienced firsthand—the consequences of not having money. In her defense, studies have shown that money problems are some of the most destructive problems within romantic relationships.